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Abstract #0588

S-EBM: generalising event-based modelling of disease progression for simultaneous events

Christopher Samuel Parker1, Neil P Oxtoby1, Daniel C Alexander1, and Hui Zhang1
1Centre for Medical Image Computing, Department of Computer Science, UCL, London, UK, London, United Kingdom

Synopsis

Keywords: Neurodegeneration, Modelling, Disease progression

S-EBM generalises the event-based model (EBM) of disease progression for simultaneous events. In synthetic data, S-EBM can tell the difference between simultaneous and non-simultaneous events under a range of experimental conditions. In comparison to conventional EBM, S-EBM avoids artificial serial orderings, permitting more accurate and parsimonious descriptions of disease progression. When applied to real Alzheimer’s disease biomarker data, S-EBM estimates a sequence containing neurologically plausible simultaneous events which more closely explain the data than conventional EBM. S-EBM may be applied to recover novel patterns of disease progression thereby informing our understanding of disease evolution.

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Keywords